9899023 has 2 divisors, whose sum is σ = 9899024. Its totient is φ = 9899022.

The previous prime is 9899009. The next prime is 9899041. The reversal of 9899023 is 3209989.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9899023 is a prime.

9899023 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9899003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949511 + 4949512.

It is an arithmetic number, because the mean of its divisors is an integer number (4949512).

Almost surely, 2^9899023 is an apocalyptic number.

9899023 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899023 is an equidigital number, since it uses as much as digits as its factorization.

9899023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 9899023 is about 3146.2712851882. The cubic root of 9899023 is about 214.7158532254.

The spelling of 9899023 in words is "nine million, eight hundred ninety-nine thousand, twenty-three".